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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 Zero.
 Infinity.
 4.32.
  2.16.

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Electromagnetic Field Theory
The potential that appears at a point in space due to the current which caused it is called potential

Accelerating
Retardation
Oscillating
Lagging the current

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Electromagnetic Field Theory
1 Maxwell is the same as

 10-4 weber.
 10-8 weber.
 104 weber.
 10-8 weber.

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Electromagnetic Field Theory
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as

Loss coefficient
None of these
Front to back ratio
Transmission efficiency

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Electromagnetic Field Theory
The lagging of flux density behind the applied magnetising force is known as

 flux.
 hysteresis.
All of these
 permeance.

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Electromagnetic Field Theory
RF inductor are characterized by

 low current rating and high resistance.
 high current rating and low resistance.
 low current rating and low resistance.
 high current rating and high resistance.

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